<template>
  <div class="shopcar-container">


    <div class="goods-list">

      <!-- 商品列表区域 -->
      <div class="mui-card" v-for="(item,i) in goodslist" :key="item.id">
        <div class="mui-card-content">
          <div class="mui-card-content-inner">

            <mt-switch v-model="$store.getters.getGoodsSelected[item.id]" @change="selectedChanged(item.id, $store.getters.getGoodsSelected[item.id])"></mt-switch>
            </mt-switch>
            <img :src="item.thumb_path">
            <div class="info">
              <h1>{{item.title}}</h1>
              <p>
                <span class="price">￥{{ item.sell_price }}</span>
                  <numbox :initcount="$store.getters.getGoodsCount[item.id]" :goodsid="item.id"></numbox>
                  <!-- 如何从购物车中获取商品的数量? -->
                  <!-- 1.我们可以先创建一个 空对象,然后循环购物车中所有商品的数据,吧当前循环这条商品的id, -->
                  <!-- 作为对象的属性名 count作为值 -->
                  <a href="javascript:;" @click.prevent="remove(item.id, i)">删除</a>
              </p>
            </div>
            </mt-switch>
          </div>
        </div>
      </div>

      <!-- 商品结算区域 -->
      <div class="mui-card">
        <div class="mui-card-content">
          <div class="mui-card-content-inner jiesuan">
            <div class="left">
              <p>总计(不含运费)</p>
              <p>已勾选商品 <span class="red">{{$store.getters.getGoodsCountAndAmount.count}}</span> 件, 总价 <span class="red">{{$store.getters.getGoodsCountAndAmount.amount}}</span> </p>
            </div>
            <mt-button type="danger">去结算</mt-button>
          </div>
        </div>
      </div>
    </div>

    <!-- <p>{{$store.getters.getGoodsSelected}}</p> -->
  </div>
</template>

<script>
  import numbox from '../subcomponents/shopcar_numbox'

  export default {
    data() {
      return {
        goodslist: []
      }
    },
    created() {
      this.getGoodsList()
    },
    methods: {
      getGoodsList() {
        // 1. 获取到 store 中所有的商品的Id，然后拼接出一个 用逗号分隔的 字符串
        var idArr = [];
        this.$store.state.car.forEach(item => idArr.push(item.id));
        // 如果 购物车中没有商品，则直接返回，不需要请求数据接口，否则会报错
        if (idArr.length <= 0) {
          return;
        }
        // 获取购物车商品列表
        this.$http
          .get("api/goods/getshopcarlist/" + idArr.join(","))
          .then(result => {
            if (result.body.status === 0) {
              this.goodslist = result.body.message;
            }
          });
      },
      remove(id, index) {
        // 点击删除,把商品从 store 中根据传递的 id 删除,同时把 前组件中的 goodslist中,对应要删除的
        // 那个商品, 使用 index 来删除
        this.goodslist.splice(index, 1);
        this.$store.commit("removeFormCar", id)
      },
      selectedChanged(id, val) {
        // 每当点击开关, 把最新的开关状态,同步到 store 中
        this.$store.commit("updateGoodsSelected", { id, selected: val })
      }
    },
    components: {
      numbox
    }
  }
</script>

<style lang="scss" scoped>
  .shopcar-container {
    background-color: #eee;
    overflow: hidden;

    .goods-list {
      .mui-card-content-inner {
        display: flex;
        align-items: center;
      }

      img {
        width: 60px;
      }

      h1 {
        font-size: 13px;
      }

      .info {
        display: flex;
        flex-direction: column;
        justify-content: space-between;

        .price {
          color: red;
          font-weight: bold;
        }
      }
    }

    .jiesuan {
      display: flex;
      justify-content: space-between;
      align-items: center;

      .red {
        color: red;
        font-weight: bold;
        font-size: 16px;
      }
    }
  }
</style>